Jessica Alba kept busy yesterday running a bevy of errands around Beverly Hills. She kept her look casual in another maxi dress but this time stuck with a neutral palette in shades of gray and accessorized with a hot little Proenza Schouler PS1 bag (White Pouch)... http://www.popsugar.com/Jessica-Alba-Carrying-Proenza-Schouler-PS1-17566432
I do believe that is indeed the small, but it looks like Birch. It appears smaller than mine (which is the large), though I've never seen that size in person.
Thanks Micole and debi.n Love the colour birch! I'm so lemming for the PS1 Keepall but the current available colours don't really appeal to me Hoping more colours will be released soon!